January 20, 2023
Most of the upslope clouds which had formed behind yesterday’s frontal passage have dissipated into mostly clear to partly cloudy conditions. Temperatures at midday were right around the 50 degree mark. For at least the next week, and possibly ten days, dry weather will prevail as we fall back into a dry blocking ridge pattern. currently there is a ridge of high pressure with a ridge extending northeastward into the Pacific Northwest and western Canada. The low pressure system responsible for yesterday’s light showers is now centered over northern Arizona. A northerly flow prevails over northern California between the off shore high and the low over the Desert Southwest. This flow is responsible for the marginally above average temperatures which will continue well into next week. this means we will have areas of frost and will eventually be responsible for more and more valley fog and low clouds. The high off shore will widen in scope as it builds further north and east. By the middle of next week, the high will be centered near Washington state, creating a rex block pattern. some models show a dry forecast through the end of the month, however the GFS and two week models are displaying a possible pattern change near the end of the month which could reintroduce precipitation in California. I started seeing this yesterday on the gfs model. Now the newest two week model is following suit.
Forecast: Mostly clear skies through Monday with areas of night and morning fog and low clouds. Mostly clear skies will continue Monday night through Friday with areas of night and morning fog and/or low clouds.
Temperatures:
| Madera 30/52/31/52 | Reedley 31/53/31/52 | Dinuba 30/53/31/53 | 
| Porterville 30/52/31/52 | Lindsay 29/52/30/53 | Delano 31/52/32/52 | 
| Bakersfield 34/53/35/52 | Taft 37/50/37/52 | Arvin 32/53/33/53 | 
| Lamont 33/52/33/53 | Pixley 31/53/32/51 | Tulare 29/52/30/52 | 
| Woodlake 30/53/32/52 | Hanford 32/52/33/53 | Orosi 30/52/30/53 | 
Wind Discussion: Winds this evening will be mainly out of the northwest at 10 to 20 mph along the center and west side of the valley with stronger gusts. Winds over much of Kern and Tulare counties will be mainly out of the northwest at 8 to 15 mph with stronger gusts through this evening. Winds later tonight will be out of the northwest at 5 to 10 mph. Winds Saturday through Monday will generally be at or less than 7 mph with periods of near calm conditions.
Rain: Expect dry weather for the next week to possibly ten days.
Frost: Most of the upslope clouds had dissipated as of midday. The remainder will clear out through the evening hours, revealing mostly clear skies tonight. Winds will not be a factor. So the first in a series of radiational cooling nights is upon us. Fortunately, it’s nothing too serious. Coldest unprotected river bottom and similar low spots have the potential tonight of dipping down into the 27 to 28 degree range with most flat terrain operations chilling in the 29 to 33 degree range. Similar conditions can be expected the next two or three nights. The inversion tonight will be moderate with temperatures at 34 feet generally running 4 to 8 degrees warmer at most locations. Now that the upslope clouds are no longer a factor, we can concentrate on the fog and how widespread it become. We’re only in the latter part of January so we have roughly 2 weeks of the fog season left. Upper level high pressure will begin to clamp down on the valley and, with recent heavy rains, soil moisture is high, adding to the fog recipe. Slow moderation will occur, but not until Tuesday or so when high temperatures begin to rise into the mid to upper 50s with overnight lows generally in the mid 30s.
Lows Tonight:
| Terra Bella
 30  | 
Porterville
 30  | 
Ivanhoe
 29  | 
Woodlake
 29  | 
| Strathmore
 30  | 
McFarland
 29  | 
Ducor
 31  | 
Tea Pot Dome
 30  | 
| Lindsay
 29  | 
Exeter
 28  | 
Famoso
 30  | 
Madera
 30  | 
| Belridge
 29  | 
Delano
 30  | 
North Bakersfield
 31  | 
Orosi
 28  | 
| Orange Cove
 30  | 
Lindcove
 29  | 
Lindcove Hillside
 af  | 
Sanger River Bottom
 27  | 
| Root creek
 29  | 
Venice Hill
 30  | 
Rosedale
 32  | 
Jasmine
 31  | 
| Arvin
 33  | 
Lamont
 32  | 
Plainview
 30  | 
Mettler
 30  | 
| Edison
 33  | 
Maricopa
 31  | 
Holland Creek
 32  | 
Tivy Valley
 29  | 
| Kite Road South
 32  | 
Kite Road North
 29  | 
AF=Above Freezing
Next report: January 21 morning
At John Hibler Weather Forecasting, it is our goal to provide the most accurate forecasts available. Weather forecasting, unlike any other business, invites errors. Weather, by nature, is chaotic. It is our goal to be as accurate as humanly possible.